The principle upgrade in the Nvidia GTX 1660 Super over the original GTX 1660 lies in the memory. There would be the same quantity of memory, except that the Super makes the switch from GDDR5 to GDDR6, going from 8Gbps to 14 Gbps. The card uses the same die, a Turing 116-300, so expect no changes over the original specification other than potentially some tweaking of clock speeds. So we’re still looking at 1048 CUDA cores, 80 TMUs and 48 ROPs.
There are no specifications available for the Nvidia GTX 1650 Ti, although it is fair to assume it won’t be too far away from the original GTX 1650. Any improvement would be good, but there might need to be a significant move in pricing and/or performance for the 1650 Ti to establish a raison d'etre with the AMD Radeon RX 570 sitting so close to its price point.